Response of the heavy-fermion superconductor CeCoIn₅to pressure: roles of dimensionality and proximity to a quantum-critical point

Abstract

We report measurements of the pressure-dependent superconducting transition\ntemperature $T_c$ and electrical resistivity of the heavy-fermion compound\nCeCoIn$_5$. Pressure moves CeCoIn$_5$ away from its proximity to a\nquantum-critical point at atmospheric pressure. Experimental results are\nqualitatively consistent with theoretical predictions for strong-coupled,\nd-wave superconductivity in an anisotropic 3D superconductor.\n